metal flashings on a dutch gable northcote. a look at the inside from what we call the patio view from the perch the girls have a great view of all the activity in our yard and the neighbors yard. gap valley seal roll. common roof terms. what is torch on roofing ?. running parallel to the cladding, this roof flashing is used on a gable end to secure the edges of the cladding. roll top ridge flashing.